added notification toasts (error modals still broken)

internal/handlers/notifications.go

@@ -0,0 +1,141 @@
+package handlers
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+
+	"git.haelnorr.com/h/golib/hws"
+)
+
+// NotificationType defines the type of notification
+type NotificationType string
+
+const (
+	NotificationSuccess NotificationType = "success"
+	NotificationWarning NotificationType = "warning"
+	NotificationInfo    NotificationType = "info"
+)
+
+// Notification represents a toast notification (success, warning, info)
+type Notification struct {
+	Type    NotificationType `json:"type"`
+	Title   string           `json:"title"`
+	Message string           `json:"message"`
+}
+
+// ErrorModal represents a full-screen error modal (500, 503)
+type ErrorModal struct {
+	Code    int    `json:"code"`
+	Title   string `json:"title"`
+	Message string `json:"message"`
+	Details string `json:"details"`
+}
+
+// setHXTrigger sets the HX-Trigger header with JSON-encoded data
+func setHXTrigger(w http.ResponseWriter, event string, data any) {
+	payload := map[string]any{
+		event: data,
+	}
+
+	jsonData, err := json.Marshal(payload)
+	if err != nil {
+		// Fallback if JSON encoding fails
+		w.Header().Set("HX-Trigger", event)
+		return
+	}
+
+	w.Header().Set("HX-Trigger", string(jsonData))
+}
+
+// formatErrorDetails extracts and formats error details from wrapped errors
+func formatErrorDetails(err error) string {
+	if err == nil {
+		return ""
+	}
+
+	// Use %+v format to get stack trace from github.com/pkg/errors
+	return fmt.Sprintf("%+v", err)
+}
+
+// notifyToast sends a toast notification via HX-Trigger header
+func notifyToast(
+	w http.ResponseWriter,
+	notifType NotificationType,
+	title string,
+	message string,
+) {
+	notification := Notification{
+		Type:    notifType,
+		Title:   title,
+		Message: message,
+	}
+
+	setHXTrigger(w, "showNotification", notification)
+}
+
+// notifyErrorModal sends a full-screen error modal via HX-Trigger header
+func notifyErrorModal(
+	s *hws.Server,
+	w http.ResponseWriter,
+	statusCode int,
+	title string,
+	message string,
+	err error,
+) {
+	modal := ErrorModal{
+		Code:    statusCode,
+		Title:   title,
+		Message: message,
+		Details: formatErrorDetails(err),
+	}
+
+	// Log the error
+	s.LogError(hws.HWSError{
+		StatusCode: statusCode,
+		Message:    message,
+		Error:      err,
+		Level:      hws.ErrorERROR,
+	})
+
+	// Set response status
+	w.WriteHeader(statusCode)
+
+	// Send notification via HX-Trigger
+	setHXTrigger(w, "showErrorModal", modal)
+}
+
+// notifySuccess sends a success toast notification
+func notifySuccess(w http.ResponseWriter, title string, message string) {
+	notifyToast(w, NotificationSuccess, title, message)
+}
+
+// notifyWarning sends a warning toast notification
+func notifyWarning(w http.ResponseWriter, title string, message string) {
+	notifyToast(w, NotificationWarning, title, message)
+}
+
+// notifyInfo sends an info toast notification
+func notifyInfo(w http.ResponseWriter, title string, message string) {
+	notifyToast(w, NotificationInfo, title, message)
+}
+
+// notifyInternalServiceError sends a 500 error modal
+func notifyInternalServiceError(
+	s *hws.Server,
+	w http.ResponseWriter,
+	message string,
+	err error,
+) {
+	notifyErrorModal(s, w, 500, "Internal Server Error", message, err)
+}
+
+// notifyServiceUnavailable sends a 503 error modal
+func notifyServiceUnavailable(
+	s *hws.Server,
+	w http.ResponseWriter,
+	message string,
+	err error,
+) {
+	notifyErrorModal(s, w, 503, "Service Unavailable", message, err)
+}